teahl



J. H. TEAHL.

Mill Spf ndle.

Patented May 14, 1867.

ltitth gems gaunt ffirn.

JOHN H. TEAHL, or EBERLYS MILLS, PENNSYLVANIA.

' Letters-Patent No. 54,809, dated May 14, 1867.

IMPROVEMENT IN- BUSHES FOR SPINDLES FOR GRINDING-MILLS.

TO ALL WHOM IT MAY CONCERN Be it known that I, JOHN H. TI-IAIIL, of Eberlys Mills, Cumberland county, State of Pennsylvania, have invented new and useful Improvements in Mill-Bushes; and I do hereby declare the following to be an exact descriptionthereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification, in which- Figure 1 represents a top view of themill-burrs and bush.

Figure 2, a. side elevation of the same.

Figure 3, a perspective view of the conical tightcners.

Figure 4, the box in which the tighteners operate.

The nature of the invention consists in the triangular-shaped plates above and below the rollers, the millspindle operating between or in the centre of the rollers that act as self-tighteners; and they revolve in a squareshaped metallic ,box or bush in a funnel-shaped centre.

A represents the mill-burr; B, the spindle; C, the wheel; D, the inetallic b'ox or bush, square on the outside, but tapering towards the bottom, and hollow in the inside, as an inverted cone, in which the rollers E revolve, and operate in the apertures G of the top and bottom triangular-shaped plates H, in the centre of which the spindle B operates, and is regulated and self-tightened by the tightencrs or rollers E pressing against the box D. The plates H are triangular-shaped, with three stays or posts J J J between, so as to form a rotating frame, that supports the rollers, and r'evolves with them, in the conical or funnel-shaped box D, the rounding sides of the rollers E projecting beyond the edges of the plates H, and revolving against the box D.

What I claim as my invention, and desire to secure by Letters Patent, is

The above-described mill-bush, consisting of the funnel-shaped metal box 1), having conical friction-rollers revolving therein, and carrying the spindle within the frame that holds the rollers, when constructed and operating substantially as described. 7 I

i JOHN H. TEAHL. Witnesses Gno. W. OnrswELL.

A. G. HAMAKEH. 

